1.添加自定义返回值R \n2.测试自定义返回值

src/main/java/com/example/testspring/demos/modules/common/utils/R.java

@@ -0,0 +1,54 @@
+package com.example.testspring.demos.modules.common.utils;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class R extends HashMap<String, Object> {
+    private static final long serialVersionUID = 1L;
+
+    public R() {
+        put("code", 0);
+        put("msg", "success");
+    }
+
+    public static R error() {
+        return error(500, "未知异常，请联系管理员");
+    }
+
+    public static R error(String msg) {
+        return error(500, msg);
+    }
+
+    public static R error(int code, String msg) {
+        R r = new R();
+        r.put("code", code);
+        r.put("msg", msg);
+        return r;
+    }
+
+    public static R ok(String msg) {
+        R r = new R();
+        r.put("msg", msg);
+        return r;
+    }
+
+    public static R ok(Map<String, Object> map) {
+        R r = new R();
+        r.putAll(map);
+        return r;
+    }
+
+    public static R ok() {
+        return new R();
+    }
+
+
+    public R put(String key, Object value) {
+        super.put(key, value);
+        return this;
+    }
+
+
+
+
+}

src/main/java/com/example/testspring/demos/modules/user/controller/testController.java

@@ -1,6 +1,7 @@
 package com.example.testspring.demos.modules.user.controller;
 
 
+import com.example.testspring.demos.modules.common.utils.R;
 import com.example.testspring.demos.modules.user.entity.Robot;
 import com.example.testspring.demos.modules.user.entity.SysMenu;
 import com.example.testspring.demos.modules.user.entity.SysUser;
@@ -32,4 +33,9 @@ public class testController {
     public List<Robot> test(){
         return robotService.selectRobotList(new Robot());
     }
+
+    @GetMapping("/testR")
+    public R testR(){
+        return R.ok().put("data",robotService.selectRobotList(new Robot()));
+    }
 }

src/main/resources/application.yml

@@ -12,4 +12,5 @@ server:
 
 
 mybatis:
+  # mapper????
   mapper-locations: classpath:mapper/**/*.xml